Spyderco Yojumbo Compression Lock (Blue) (4" Satin) [C253GPCBL]This Knife Blade: Satin Wharncliffe blade with a hollow grind made from CPM SPY27 steel. Opener: Spyderco's signature Round Hole opener. Handle: Textured cobalt G-10 handle scales that sandwich steel liners. Lock: Spyderco's exceptional Compression Lock system. Carry: Four-position pocket clip.YoJumbo Series The YoJumbo is the jumbo-sized version of Spyderco's popular Yojimbo 2 model, designed by personal defense trainer Michael Janich. This knife's Wharncliffe blade style is remarkably utilitarian and ideal should-heaven forbid-you find yourself in a situation where you need to defend yourself.Its four-position pocket clip lets you carry it oriented to your preference, and its textured hand ensures a solid grip when it's time to put the YoJumbo's 4Key Features Blade length: 4.00" Blade steel: CPM SPY27 Blade style: Wharncliffe Blade finish: Satin Edge type: Plain Handle material: G-10 Color: Blue Opener: Thumb Hole Lock: Compression Lock Weight: 5.30 oz. Specifications Brand: Spyderco Vendor Code: C253GPCBL Origin: USA Model Number: YoJumbo Country of Origin: USA Overall Length: 9.29" Blade Length: 4.00" Cutting Edge: 3.98" Blade Thickness: 0.15" Blade Material: CPM SPY27 Blade Style: Wharncliffe Blade Grind: Hollow Finish: Satin Edge Type: Plain Handle Length: 5.37" Handle Thickness: 0.45" Handle Material: G-10 Color: Blue Weight: 5.30 oz. User: Right Hand, Left Hand Pocket Clip: Tip-Up, Tip-Down Knife Type: Manual Opener: Thumb Hole Lock Type: Compression Lock Best Use: Tactical Product Type: Knife Blade Width: 1.50" Designer: Michael Janich Frame Liner: Steel Handle Width: 1.63"